Have three 3HP pumps in our swim spa. One has gone south (starter switch bad) and another heats up and trips breaker after 10-minutes. Need to replace all three as they are all over twenty years old. We don't use them to swim against the current, as at 210 pounds these 'fat boy' pumps don't work that well for me. They are Pentair WhisperFlo and have served us well. Looking to replace with fewer HP as only the grandkids use them. Perhaps a 1 1/2HP - 2HP. Anyone know of a good source and make/model?